Polyamide yarn cake multi-defect recognition device and inspection method thereof

Abstract

The application discloses a nylon cake multi-defect recognition device and a testing method thereof, relates to quality detection equipment in the field of chemical fiber manufacturing, and aims to improve the imaging contrast shortage problem caused by light scattering during the detection of the side defects of the cake. The device comprises a rack, a conveyor, a loading piece for loading the cake and an inner light source assembly. The stand of the loading piece is provided with a light transmission part. When the loading piece moves to the position below the inner light source assembly with the cake, the inner light source can enter the inside of the stand, and the light is irradiated outward from the inside of the cake through the light transmission part. The device can further comprise a calibration assembly which can finely adjust the angle of the loading piece during the descending process of the inner light source, so as to ensure that the light transmission part is aligned with the light source. The structure provides an internal illumination light path for the side of the cake, cooperates with the external light source, helps to obtain a side image with better contrast, and the setting of the calibration assembly reduces the debugging demand caused by the conveying deviation, and facilitates the maintenance of the continuous detection process.

Description

Technical Field

[0001] This invention relates to the field of chemical fiber manufacturing technology, and in particular to a multi-defect identification device for nylon yarn cakes and its inspection method. Background Technology

[0002] In the production and quality inspection of nylon yarn cakes, visual identification of defects on the surface and sides of the yarn cake is a common process. The common practice in this field is to place the yarn cake on a conveyor line, set up an external light source and an industrial camera at a specific station, and take pictures and analyze defects on the upper and lower surfaces or outer circumference of the yarn cake. For the detection of the side of the yarn cake, the common practice is to rely on the ring or strip light source set on the outside of the yarn cake for illumination. However, the nylon yarn cake itself has a certain degree of translucency. When light is incident only from the outside, some light will be scattered inside the yarn cake. Under certain working conditions, this phenomenon may lead to insufficient imaging contrast in some areas of the side surface of the yarn cake. In particular, for defects such as oil stains and internal fuzz that are similar to the optical properties of the yarn cake material, the recognition system may have difficulty distinguishing them clearly from the acquired images. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies where light scattering leads to insufficient imaging contrast during the detection of defects on the side of nylon yarn cakes. This invention proposes a multi-defect identification device and inspection method for nylon yarn cakes.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A multi-defect identification device for nylon yarn cake and its inspection method include a frame, the interior of which is respectively set as a first station and a second station to detect the top and bottom surfaces and the sides of the yarn cake. Both stations are equipped with a light source component and an identification component. The conveyor is located below the frame station; A loading component for assembling a yarn cake, wherein a light-transmitting window is provided on the surface of the loading component at the position of the yarn cake; A calibration component is used to align the light-transmitting window with the light source component, and the calibration component is set in the second station.

[0005] In one possible design, both sides of the frame are provided with detection channels whose shape matches the loaded components.

[0006] In one possible design, the loading component includes a lower chassis and an upper column. The column has a hollow structure, and a tray for holding the silk cake is fixedly fitted on the outer wall of the column. The conveyor has a roller structure, and limit plates are fixedly installed on both sides of the top of the conveyor frame along the length direction. The chassis is located below the limit plates.

[0007] In one possible design, the light-transmitting window is disposed on the surface of the column and above the tray, and the light-transmitting window comprises a plurality of highly transparent windows equidistantly distributed along a ring.

[0008] In one possible design, the light source assembly and the recognition assembly located at the first workstation respectively include two sets of light source components I and two sets of industrial cameras I. An assembly frame I is fixedly installed on the inner wall of the frame. Both sets of light source components I and industrial cameras I are installed on the assembly frame I and are respectively located above and below the silk cake.

[0009] In one possible design, the light source assembly and recognition assembly located at the second workstation respectively include two sets of light source elements II and two sets of industrial cameras II. An assembly frame II is fixedly provided on the inner wall of the frame. Both light source elements II and industrial cameras II are mounted on the assembly frame II and are arranged around the outer side of the silk cake.

[0010] In one possible design, the light source assembly located at the second workstation further includes an annular light source and a liftable inner light source assembly. A suspension bracket for mounting the annular light source is fixedly installed inside the frame, and the annular light source is located above the silk cake. The inner light source assembly is located inside the annular light source. The internal light source assembly includes a fixed cylinder fixedly mounted to the suspension bracket and a liftable lifting seat located inside the fixed cylinder. The bottom of the outer wall of the lifting seat has an annular concave surface, and the outer wall of the concave surface has multiple movable slots arranged in annular and equidistant patterns. Movable seats are slidably mounted radially inside the movable slots. A light source component III is mounted on the surface of the movable seat. The light source component III corresponds to the high transparency window. A stop ring is fixedly mounted at the bottom of the inner wall of the fixed cylinder, and an inclined guide surface that cooperates with the stop ring is provided at the top of the movable seat.

[0011] In one possible design, the calibration assembly includes a lifting ring located between a fixed cylinder and a lifting seat, and two limiting frames, both fixed to the lifting ring and centrally symmetrical. Guide blocks II and I are fixedly mounted on the inner and outer walls of the lifting ring, respectively. The inner wall of the fixed cylinder has vertical and horizontal guide grooves corresponding to and communicating with guide block I. The outer wall of the lifting seat has oblique arc-shaped guide strips I and II, corresponding to guide block II and distributed along the height. Oblique surfaces are provided at the top and bottom of guide block II. A protruding ring is fixedly mounted at the top of the column. The outer wall of the protruding ring has a groove corresponding to the limiting frames. An oblique pushing surface is provided at the bottom end of the limiting frames. A common reinforcing ring is fixedly mounted between the two limiting frames.

[0012] The inspection method according to the aforementioned nylon yarn cake multi-defect identification device includes the following steps: 1. Feeding and conveying: The conveyor transports the load carrying the yarn cake to the first station of the frame; 2. Upper and lower surface inspection: Light source I illuminates the upper and lower end faces of the wire cake, and industrial camera I acquires images to complete the identification of defects on the upper and lower surfaces; 3. Calibration and alignment: The loading component is transported to the second station, and the lifting ring drives the limit frame to descend and rotate. Through the groove, the loading component is rotated to align the high-transparency window with the light source component III. 4. Side inspection: The lifting seat descends and pushes the movable seat outward. The light source III illuminates the silk cake from the inside through the high transparency window. In conjunction with the light source II and the ring light source, the industrial camera II collects the side image to complete the defect identification. 5. Reset and discharge: The lifting seat rises and resets, and the conveyor sends the loaded parts out of the frame.

[0013] In this application, during actual use, the silk cake is mounted on the column of the loading component and conveyed along the conveyor in a specified direction. When the silk cake passes through the first station, the light source I mainly illuminates the upper and lower surfaces of the silk cake, and the industrial camera I detects defects such as fuzz, oil stains, poor forming, dents, strand tripping, and fuzz on the upper and lower surfaces of the silk cake. After that, it enters the second station, where the light source II and the ring light source mainly illuminate the side circumferential surface of the silk cake. The industrial camera II detects defects such as oil stains, fuzz, and damage on the silk cake. After that, the silk cake that passes the system inspection will flow out from the qualified material channel at the rear, while the silk cake with defects will enter an additional material channel. Guide block II is initially located at the top of the inclined arc guide bar II. When the silk cake enters the second station, the driving lifting seat moves downward. At this time, the lifting ring will move downward synchronously by gravity. Guide block I enters the interior of the horizontal guide groove along the vertical guide groove. Then the lifting seat continues to move downward, and the inclined arc guide bar II will separate from guide block II. The bottom of the inclined arc guide bar I will abut against the top wall of guide block II. Then the lifting ring continues to move downward, so that when the peripheral light source III enters the interior of the column, the inclined arc guide bar I will press down on guide block II and drive the lifting ring to rotate horizontally. The light source III will be aligned with the corresponding high transparency window, thereby irradiating the silk cake from the inside. The lifting ring will calibrate the angle of the load as it moves downwards. If the load rotates slightly during transport, it will... Figure 5 For example, the loading component rotates clockwise by a certain angle so that when the bottom end of the limiting frame enters the interior of the groove, it will be located in the middle position. When the limiting frame rotates counterclockwise, its bottom end will abut against the right side wall of the groove in advance. After that, the limiting frame continues to rotate, which will drive the loading component to rotate until the limiting frame finishes rotating. Then the loading component will be in the correct position, and the high transparency window will be aligned with the light source component III. If the lifting ring rotates counterclockwise by a certain angle, the limiting frame will contact the loading component in advance when it descends. Specifically, the inclined push surface at its bottom will abut against the top of the side wall of the groove, preventing the lifting ring from moving further downward by gravity. Guide block I will also be unable to enter the interior of the transverse guide groove. When the lifting seat continues to move downward, the inclined arc guide bar I presses against guide block II, thereby driving the lifting ring to continue moving downward until guide block I enters the interior of the transverse guide groove. The limiting frame pushes the loading component to rotate through the inclined push surface, thereby directly completing the angle calibration of the loading component. Afterward, when the subsequent rotation of the limiting frame ends, the limiting frame will fit perfectly against the inner wall of the high transparency window. When the lifting ring and lifting seat are reset, the lifting seat is moved upwards to reset directly. The inclined arc-shaped guide bar II on its outer wall will first abut against the bottom wall of the guide block II, thereby pushing the lifting ring to rotate, so that the guide block I rotates into the interior of the vertical guide groove. After the lifting seat continues to move upwards, the inclined arc-shaped guide bar II will push the lifting ring to move upwards along the horizontal guide groove to reset. When the lifting seat moves downward and the movable seat moves out of the range of the abutment ring, the movable seat will drive the light source component III to move outward through the elastic element. Conversely, when the lifting seat returns to its original position, the abutment ring will abut against the inclined guide surface at the top, thereby squeezing the movable seat to return to its original position inward.

[0014] In this invention, the nylon yarn cake multi-defect identification device has a calibration component that enables the inner light source to drive the loading component to make a slight rotational adjustment during the descent process. This ensures that the light-transmitting part on the loading component is accurately aligned with the light emission direction of the inner light source, avoiding the failure of the inner lighting due to the angular deviation of the loading component during the conveying process and reducing manual intervention. In this invention, the nylon yarn cake multi-defect identification device can use sealing plates of different materials for the light-transmitting part. For example, high-transparency acrylic plates are lightweight and facilitate smooth calibration operations, while tempered glass is more wear-resistant and heat-resistant, providing an optional implementation scheme for the long-term operation of the device under different working conditions. In this invention, during use, by setting an internal light source component that can enter the interior of the column carrying the silk cake, light can be transmitted from inside the silk cake to the outside, forming a combination with the external light source. This helps to reduce light scattering caused by the semi-transparent nature of the silk cake material, resulting in a clearer contrast between light and dark on the side surface of the silk cake, making it easier for the identification system to distinguish defects such as oil stains and internal fuzz. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a multi-defect identification device for nylon yarn cakes proposed in this invention; Figure 2 This is a schematic diagram of the first station structure of a multi-defect identification device for nylon yarn cakes proposed in this invention; Figure 3 This is a schematic diagram of the second station structure of a multi-defect identification device for nylon yarn cakes proposed in this invention; Figure 4 For the present invention Figure 3 Enlarged view of the structure of section A; Figure 5 This is a schematic diagram of the loading component structure of a multi-defect identification device for nylon yarn cakes proposed in this invention; Figure 6 This is a schematic diagram of the fixed cylinder structure of a multi-defect identification device for nylon yarn cakes proposed in this invention; Figure 7 For the present invention Figure 6 Enlarged view of the structure of section B.

[0016] In the diagram: 1. Frame; 111. Inspection channel; 2. Conveyor; 211. Limiting plate; 3. Loading component; 311. Chassis; 312. Column; 313. Storage tray; 314. High-transparency window; 315. Convex ring; 316. Groove; 4. Assembly rack I; 411. Light source I; 412. Industrial camera I; 5. Assembly rack II; 511. Light source II; 512. Industrial camera II; 6. Circular light source; 7. Suspension frame; 8. Fixing cylinder; 811 811 Vertical guide groove; 812 Horizontal guide groove; 813 Abutment ring; 9. Lifting seat; 911 Oblique arc guide bar I; 912 Oblique arc guide bar II; 913 Concave surface; 914 Movable groove; 915 Movable seat; 916 Oblique guide surface; 917 Light source component III; 10. Lifting ring; 1011 Limiting frame; 1012 Reinforcing ring; 1013 Oblique push surface; 1014 Guide block I; 1015 Guide block II; 1016 Oblique contact surface. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] In one embodiment: Reference Figure 1 A defect identification device, the overall structure of which mainly includes a frame 1, a conveyor 2, a loading component 3, and a calibration component.

[0019] The frame 1 is a frame structure, and its interior is divided into a first station and a second station along the conveying direction. The first station is mainly used to identify defects on the upper and lower surfaces of the wire cake, and the second station is mainly used to identify defects on the sides of the wire cake. The frame on both sides of the frame 1 is provided with detection channels 111, the shape of which matches the contour of the loading component 3.

[0020] The conveyor 2 is a roller conveyor, installed below the frame 1. Limiting plates 211 are welded and fixed on both sides of the top of the frame along the length direction. The inner spacing of the limiting plates 211 is slightly larger than the width of the middle of the loading component 3, which is used to limit the conveying path of the loading component 3.

[0021] refer to Figure 5 The loading component 3 is used to assemble a single nylon yarn cake. It includes a base 311 and a column 312. The base 311 is located below and passes through the limiting plate 211. The column 312 is a hollow round tube, which is vertically fixed to the center of the base 311 by welding. On the outer wall of the column 312, a storage tray 313 is fixedly fitted by interference fit to support the lower end face of the yarn cake. On the tube wall of the column 312 above the storage tray 313, multiple rectangular through holes are equally spaced along the circumference as high transparency windows 314. The high transparency windows 314 can be sealed and filled with high transparency acrylic sheet or glass. A protruding ring 315 is welded and fixed to the top of the column 312. The outer wall of the protruding ring 315 has two centrally symmetrical grooves 316.

[0022] refer to Figure 2 The light source assembly and recognition assembly located at the first workstation include two sets of light source components I411 and two sets of industrial cameras I412, respectively. An assembly frame I4 is fixedly installed on the inner wall of the frame 1 by bolts. The two sets of light source components I411 are respectively installed on the lower surface and bottom of the top crossbeam of the assembly frame I4 by brackets, respectively aligning with the upper and lower surfaces of the silk cake. The two sets of industrial cameras I412 are also installed on the assembly frame I4, with their lenses facing the upper and lower surfaces of the silk cake, respectively. The light source component I411 can be an LED light source.

[0023] refer to Figure 3-4 The light source assembly and recognition assembly located at the second workstation include two sets of light source elements II511, two sets of industrial cameras II512, a ring light source element 6, and an inner light source assembly. An assembly frame II5 is fixedly installed on the inner wall of the frame 1 by bolts. The two sets of light source elements II511 and industrial cameras II512 are all installed on the assembly frame II5 by brackets and are arranged around the outside of the silk cake. The ring light source element 6 is installed on the top of the frame 1 by a suspension bracket 7, located directly above the silk cake. The inner light source assembly is located inside the ring light source element 6.

[0024] refer to Figure 6-7 The internal light source assembly includes a fixed cylinder 8 and a lifting seat 9. The fixed cylinder 8 is fixedly connected to the suspension frame 7. The inner wall of the fixed cylinder 8 is provided with two vertical guide grooves 811 along the axial direction. The bottom end of the vertical guide grooves 811 is connected to a horizontal guide groove 812. The horizontal guide groove 812 extends circumferentially. A ring-shaped abutment 813 is welded and fixed inside the fixed cylinder 8 near the bottom end. The inner diameter of the abutment 813 is smaller than the inner diameter of the fixed cylinder 8.

[0025] The lifting seat 9 is coaxially arranged inside the fixed cylinder 8. An oblique arc-shaped guide bar I 911 and two oblique arc-shaped guide bars II 912 are fixed on its outer wall and distributed vertically along the height. The bottom of the outer wall of the lifting seat 9 is machined with an annular concave surface 913. Multiple movable grooves 914 are equally spaced along the circumference on the outer wall of the concave surface 913. Movable seats 915 are radially slidably arranged in the movable grooves 914. An oblique guide surface 916 is machined on the top of the movable seat 915. A light source III 917 is installed on the outer end of the movable seat 915 by screws. The light source III 917 can be a dot LED. A compression spring (not shown in the figure) is also provided in the movable groove 914. Under normal conditions, the spring pushes the movable seat 915 and the light source III 917 to extend outward. When the lifting seat 9 is in the raised position, the oblique guide surface 916 on the top of the movable seat 915 contacts the lower surface of the abutment ring 813 in the fixed cylinder 8. The abutment ring 813 presses the oblique guide surface 916, forcing the movable seat 915 to retract inward against the spring force.

[0026] The calibration assembly includes a lifting ring 10 and two strip-shaped limiting brackets 1011. The lifting ring 10 is sleeved between the fixed cylinder 8 and the lifting seat 9. Two guide blocks I 1014 are fixed on the outer wall of the lifting ring 10, and two guide blocks II 1015 are fixed on the inner wall. The guide blocks I 1014 are slidably fitted in the vertical guide groove 811 and the horizontal guide groove 812 on the inner wall of the fixed cylinder 8. The top and bottom of the guide blocks II 1015 are machined with inclined surfaces 1016 for cooperating with the inclined arc-shaped guide strips on the lifting seat 9. The two limiting brackets 1011 are centrally symmetrically welded to the bottom of the lifting ring 10, and their bottom ends are machined with inclined push surfaces 1013. A reinforcing ring 1012 is welded between the two limiting brackets 1011 to increase the overall rigidity. The cross-sectional shape of the limiting brackets 1011 matches the groove 316 on the top protruding ring 315 of the loading component 3.

[0027] The silk cake is placed on the column 312 of the loading component 3 and carried and transported by the conveyor 2. When it passes through the first station, the upper and lower light source I 411 illuminates the upper and lower surfaces of the silk cake, and the industrial camera I 412 collects images to detect defects on the upper and lower surfaces. Then the loading component 3 enters the second station. At this time, the drive mechanism (such as a cylinder or motor, not shown in the figure) pushes the lifting seat 9 to move downward. The guide block I 1014 enters the interior of the horizontal guide groove 812 along the vertical guide groove 811. Then the lifting seat 9 continues to move downward. The oblique arc guide bar II 912 will disengage from the guide block II 1015, and the bottom of the oblique arc guide bar I 911 will abut against the top wall of the guide block II 1015. Then the lifting ring 10 continues to move downward, so that when the peripheral light source III 917 enters the interior of the column 312, the oblique arc guide bar I 911 will press the guide block II 1015 and drive the lifting ring 10 to rotate horizontally. The light source III 917 will be aligned with the corresponding high transparency window 314, so as to illuminate the silk cake from the inside. The lifting ring 10 will perform angle calibration on the loading component 3 when it moves downward. If the loading component 3 rotates slightly during conveying, it will... Figure 5 For example, the loading component 3 rotates clockwise by a certain angle so that when the bottom end of the limiting frame 1011 enters the interior of the groove 316, it will be located in the middle position. When the limiting frame 1011 rotates counterclockwise, its bottom end will abut against the right side wall of the groove 316 in advance. After that, the limiting frame 1011 continues to rotate, which will drive the loading component 3 to rotate. After the limiting frame 1011 finishes rotating, the loading component 3 will be in the correct position, and the high transparency window 314 will be aligned with the light source component Ⅲ917. If the lifting ring 10 rotates counterclockwise by a certain angle, the limiting frame 1011 will contact the loading component 3 in advance when it descends. Specifically, the inclined push surface 1013 at its bottom end will abut against the top of the side wall of the groove 316, preventing the lifting ring 10 from continuing to move downward by gravity. The guide block I 1014 will also be unable to enter the interior of the transverse guide groove 812. When the lifting seat 9 continues to move downward, the inclined arc guide bar I 911 will press the guide block II 1015, thereby driving the lifting ring 10 to continue to move downward until the guide block I 1014 enters the interior of the transverse guide groove 812. The limiting frame 1011 will push the loading component 3 to rotate through the inclined push surface 1013, thereby directly completing the angle calibration of the loading component 3. Afterward, when the subsequent rotation ends, the limiting frame 1011 will fit exactly against the inner wall of the high transparency window 314.

[0028] After calibration, the outer light source II511, the upper ring light source 6, and the inner point light source III917 together provide illumination to the side of the silk cake, and the industrial camera II512 acquires images from the outside.

[0029] After the inspection is completed, the drive mechanism drives the lifting seat 9 to rise. In the initial stage of rising, the bottom of the inclined arc-shaped guide bar II 912 contacts the inclined contact surface 1016 at the bottom of the guide block II 1015, driving the lifting ring 10 to rotate in the opposite direction, causing the guide block I 1014 to turn from the horizontal guide groove 812 back to the vertical guide groove 811. Then the lifting seat 9 continues to rise, and the inclined arc-shaped guide bar drives the lifting ring 10 to move upward and reset. At the same time, the rising lifting seat 9 causes the inclined guide surface 916 of the movable seat 915 to contact the abutment ring 813 again, and the light source component III 917 is pressed back into place. The loading component 3 then leaves the second station under the drive of the conveyor 2.

[0030] The device also includes a control unit (such as a PLC controller or an industrial vision control host). The control unit is electrically connected to the drive motor of the conveyor, the drive mechanism of the lifting seat, each light source, the ring light source, and the industrial camera. The control unit controls the conveyor to transport the load to the first station and the second station in sequence according to the preset process and stops it. At each station, the corresponding light source is triggered to light up and the industrial camera is controlled to collect images. The collected images are transmitted to the vision processing module for defect identification.

[0031] This application can be used in the field of chemical fiber manufacturing, or in other fields applicable to this application.

[0032] In another embodiment: a multi-defect identification device for nylon yarn cakes, which is applied to the field of chemical fiber manufacturing. The structure of this embodiment is basically the same as that of the previous embodiment. The difference is that the sealing material of the high transparency window 314 can be tempered glass in addition to high transparency acrylic sheet. Tempered glass has better wear resistance and temperature resistance, and is suitable for working conditions with more dust or more heat generated by the light source. However, it is heavier and will increase the rotational inertia of the loading component 3. When the calibration component pushes it to rotate, the drive mechanism needs to provide greater torque.

[0033] The size of the high-transparency window 314 is selected according to actual needs. A larger size can improve the lighting effect, but the overall strength of the mounting component 3 will decrease, and the larger high-transparency window 314 itself is also more prone to damage.

[0034] However, as is well known to those skilled in the art, the working principles and wiring methods of industrial cameras and drive mechanisms are conventional or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0035] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-defect identification device for nylon yarn cakes, characterized in that, include: The frame (1) is provided with a first station and a second station, which are respectively used to detect the top and bottom surfaces and the sides of the silk cake. Both stations are equipped with light source components and recognition components. Conveyor (2) is located below the workstation of frame (1); Loading component (3) is used to assemble the silk cake, and the surface of the loading component (3) located at the silk cake position is provided with a light-transmitting window; A calibration component is used to align the light-transmitting window with the light source component, and the calibration component is set in the second station.

2. The nylon yarn cake multi-defect identification device according to claim 1, characterized in that, Both sides of the frame (1) are provided with detection channels (111) whose shape matches that of the loading component (3).

3. The nylon yarn cake multi-defect identification device according to claim 2, characterized in that, The loading component (3) includes a lower chassis (311) and an upper column (312). The column (312) has a hollow structure. The outer wall of the column (312) is fixedly fitted with a storage tray (313) for carrying the silk cake. The conveyor (2) has a roller structure. Limiting plates (211) are fixedly installed on both sides of the top of the conveyor (2) frame along the length direction. The chassis (311) is located below the limiting plates (211).

4. The nylon yarn cake multi-defect identification device according to claim 3, characterized in that, The light-transmitting window is disposed on the surface of the column (312) and above the tray (313), and the light-transmitting window includes a plurality of highly transparent windows (314) distributed equidistantly along the ring.

5. The nylon yarn cake multi-defect identification device according to claim 4, characterized in that, The light source assembly and recognition assembly located at the first work station include two sets of light source components I (411) and two sets of industrial cameras I (412). The inner wall of the frame (1) is fixedly provided with an assembly frame I (4). The two sets of light source components I (411) and industrial cameras I (412) are all installed on the assembly frame I (4) and are respectively located above and below the silk cake.

6. The nylon yarn cake multi-defect identification device according to claim 5, characterized in that, The light source assembly and recognition assembly located at the second work station include two sets of light source components II (511) and two sets of industrial cameras II (512). The inner wall of the frame (1) is fixedly provided with an assembly frame II (5). The two light source components II (511) and the industrial cameras II (512) are all installed on the assembly frame II (5) and are all located around the outside of the silk cake.

7. The nylon yarn cake multi-defect identification device according to claim 6, characterized in that, The light source assembly located at the second work station also includes an annular light source component (6) and a liftable inner light source assembly. A suspension bracket (7) for mounting the annular light source component (6) is fixedly installed inside the frame (1), and the annular light source component (6) is located above the silk cake. The inner light source assembly is located inside the annular light source component (6). The internal light source assembly includes a fixed cylinder (8) fixedly mounted to the suspension bracket (7) and a liftable lifting seat (9) located inside the fixed cylinder (8). The bottom of the outer wall of the lifting seat (9) is provided with an annular concave surface (913). The outer wall of the concave surface (913) is provided with a plurality of movable grooves (914) arranged in annular equidistantly. The movable seat (915) is slidably mounted in the interior of the movable groove (914) along the radial direction. The surface of the movable seat (915) is equipped with a light source component III (917). The light source component III (917) corresponds to the high transparency window (314). The bottom of the inner wall of the fixed cylinder (8) is fixedly provided with a stop ring (813). The top of the movable seat (915) is provided with an inclined guide surface (916) that cooperates with the stop ring (813).

8. The nylon yarn cake multi-defect identification device according to claim 7, characterized in that, The calibration assembly includes a lifting ring (10) located between the fixed cylinder (8) and the lifting seat (9) and two limiting frames (1011) fixedly disposed with the lifting ring (10) and symmetrically arranged in a central manner. The inner and outer walls of the lifting ring (10) are respectively fixedly disposed with guide block II (1015) and guide block I (1014). The inner wall of the fixed cylinder (8) is provided with a vertical guide groove (811) and a horizontal guide groove (812) corresponding to and communicating with guide block I (1014). The outer wall of the lifting seat (9) is fixedly disposed with a guide block II (1015) and guide block I (1014). 5) Correspondingly, and distributed along the height, the oblique arc guide strip I (911) and oblique arc guide strip II (912) are provided with oblique contact surfaces (1016) at the top and bottom of the guide block II (1015). The top of the column (312) is fixedly provided with a convex ring (315). The outer wall of the convex ring (315) is provided with a groove (316) corresponding to the limiting frame (1011). The bottom end of the limiting frame (1011) is provided with an oblique push surface (1013). The same reinforcing ring (1012) is fixedly provided between the two limiting frames (1011).

9. The inspection method of the nylon yarn cake multi-defect identification device according to any one of claims 1 to 8, characterized in that, Includes the following steps:

1. Feeding and conveying: The conveyor (2) transports the loading component (3) carrying the wire cake to the first station of the frame (1); 2. Surface inspection: Light source I (411) illuminates the upper and lower surfaces of the silk cake, and industrial camera I (412) collects images to complete the identification of defects on the upper and lower surfaces; 3. Calibration and alignment: The loading component (3) is transported to the second station. The lifting ring (10) drives the limiting frame (1011) to descend and rotate. Through the groove (316), the loading component (3) is rotated so that the high transparency window (314) is aligned with the light source component III (917).

4. Side inspection: The lifting seat (9) descends and pushes the movable seat (915) outward. The light source III (917) illuminates the silk cake from the inside through the high transparency window (314). In conjunction with the light source II (511) and the ring light source (6), the industrial camera II (512) collects the side image to complete the defect identification.

5. Reset and discharge: The lifting seat (9) rises and resets, and the conveyor (2) sends the loading part (3) out of the frame (1).

Images